Integration Clause
A contract provision stating that the written agreement is the complete and final expression of the parties' bargain, superseding all prior discussions and writings.
What Is an Integration Clause?
An integration clause (also called a merger clause or entire-agreement clause) is a contract provision declaring that the written document contains the parties' entire agreement on the subject matter. It is the contractual mechanism that triggers the strongest form of the parol evidence rule, preventing either side from later claiming that side agreements or prior promises were part of the deal.
Why Parties Include Integration Clauses
- To prevent disputes over informal promises made during negotiations - To limit the scope of admissible evidence in litigation - To make clear that handshake deals and email exchanges were superseded - To allocate the risk of forgotten or undocumented understandings - To strengthen the enforceability of the negotiated written terms
Typical Language
A standard integration clause reads: "This Agreement constitutes the entire understanding between the parties and supersedes all prior or contemporaneous agreements, representations, and understandings, whether oral or written, with respect to the subject matter hereof." Even with an integration clause, courts will still admit evidence to prove fraud in the inducement, mutual mistake, or contract modifications made after the writing. The clause should be paired with a separate provision requiring all amendments to be in writing and signed by both parties.